2 files changed, 28 insertions, 0 deletions
diff --git a/629/CH12/EX12.8/ex12_8.txt b/629/CH12/EX12.8/ex12_8.txt
new file mode 100644
index 000000000..d2264ac13
--- /dev/null
+++ b/629/CH12/EX12.8/ex12_8.txt
@@ -0,0 +1,9 @@
+ 
+ The Mach number at the test section, M = 3.91.
+
+
+ At the test section, pressure p = 29.7 kPa and temperature T = 86 K.
+
+
+ The velocity at test section, V = 727 m/s.
+ 
+\ No newline at end of file
diff --git a/629/CH12/EX12.8/example12_8.sce b/629/CH12/EX12.8/example12_8.sce
new file mode 100644
index 000000000..fa95625a4
--- /dev/null
+++ b/629/CH12/EX12.8/example12_8.sce
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+clear
+clc
+//Example 12.8 FLOW PROPERTIES IN SUPERSONIC WIND TUNNEL
+k=1.4;
+R=287; //[J/kg.K]
+//From table A.1, interpolating for A/Ao=10,
+M=3.91; //Mach number
+printf("\n The Mach number at the test section, M = %.2f.\n\n",M)
+pt=4000; //pressure[kPa]
+Tt=350; //temp.[K]
+//In test section
+p=0.00743*pt //[kPa]
+T=0.246*Tt //[K]
+printf("\n At the test section, pressure p = %.1f kPa and temperature T = %.f K.\n\n",p,T)
+//Speed of sound
+c=sqrt(k*R*T) //[m/s]
+//Velocity
+V=M*c //[m/s]
+printf("\n The velocity at test section, V = %.f m/s.\n",V)
+\ No newline at end of file